Flexible drinking tube with check valve

Details Flexible drinking tube with check valve Flexible drinking tube with check valve

1978-08-11

1980-04-08

Michalsky, Gerald A.

Fluid handling

Line condition change responsive valves

Direct response valves

128222, 239 33, 248 79, F16K 1503

Patent

active

041967470

ABSTRACT:
Invalids have difficulty sipping water from pitchers and glasses through ordinary straws because of the effort required to lift water through a straw or tube and the fact that upon cessation of sucking the water in the tube runs back into the pitcher or glass. A flap-type check valve is placed in the lower end of the tube. Little effort is required to open the valve. The weight of the water maintains it closed.

REFERENCES:
patent: 103300 (1970-05-01), Chapin
patent: 443496 (1890-12-01), Bowser et al.
patent: 488693 (1892-12-01), Lingford et al.
patent: 982734 (1911-01-01), Martinelli
patent: 1556732 (1925-10-01), Sterrick
patent: 1813285 (1931-07-01), Galetschky
patent: 2070495 (1937-02-01), Strutz et al.
patent: 2969064 (1961-01-01), Metz
patent: 3021860 (1962-02-01), Gandy
patent: 3538514 (1970-11-01), Schimert et al.
patent: 4034780 (1977-07-01), Horvath
patent: 4095615 (1978-06-01), Ramsauer

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